摘要
研究了乙烯-乙酸乙烯酯共聚物、三元乙丙橡胶和苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物(SEBS)的共混物交联发泡材料的摩擦和磨损过程,并用动态力学热分析探讨了损耗角正切值(tanδ)与摩擦和磨损的关系,扫描电镜分析磨痕和磨损机理。结果表明,摩擦系数和磨损体积随tanδ和储能模量的变化有对应关系,均在SEBS质量分数为40%时达到最大值且磨损体积与应变能密度的倒数线性相关,这可预测其耐磨性能并为产品应用开发提供技术支持。
The friction and wear processes of the cross-linked and foamed material of the blend of ethylene-vinyl acetate copolymer, ethylene-propylene-diene terpolymer rubber and styrene-ethylene/butylene-styrene block copolymer （SEBS） with different blending compositions were investigated. Effects of loss angle tangent （tanδ） of this material on friction and wear characteristics were studied by dynamic mechanical thermal analysis. The worn surfaces and mechanisms were examined through scanning electron microscope. Experimental results show that both the friction coefficient and abrasion volume are corresponding to the changes of tanδ and the storage modulus, and they reach the maximum value at the SEBS mass fraction of 40%. The abrasion volume is linearly associated with the reciprocal of its strain energy density. Hence, it can be used to predict the wear resistance and provide technical support for application of this kind of material.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2016年第9期72-77,共6页
Polymer Materials Science & Engineering
基金
福建省自然科学基金资助项目(2016J01045
2015J05095)
福建省晋江市科技局重点项目(2014J0137
2015J0242)
福建省高分子材料重点实验(FJKL-POLY 201518)
福建省泉州科技局福建师范大学泉港石化研究院专项(2015YJY01)
关键词
关键词:交联发泡
摩擦系数
磨损体积
动态力学热分析
cross-linked and foamed
friction coefficient
abrasion volume
dynamic mechanical thermal analysis
